30 | Keysight | E4980A Precision LCR Meter 20 Hz to 2 MHz, E4980AL Precision LCR Meter 20 Hz to 300 kHz/500 kHz/1 MHz – Data Sheet
Settling time
Supplemental Information
Table 51. Test frequency setting time
Test frequency setting time
Test frequency (Fm)
Fm ≥ 1 kHz
5 ms
12 ms
22 ms
42 ms
1 kHz > Fm ≥ 250 Hz
250 Hz > Fm ≥ 60 Hz
60 Hz > Fm
Table 52. Test signal voltage setting time
Test signal voltage setting time
Test frequency (Fm)
Fm ≥ 1 kHz
11 ms
18 ms
26 ms
48 ms
1 kHz > Fm ≥ 250 Hz
250 Hz > Fm ≥ 60 Hz
60 Hz > Fm
Switching of the impedance range is as follows:
≤ 5 ms/ range switching
Measurement circuit protection
The maximum discharge withstand voltage, where the internal circuit remains protected
if a charged capacitor is connected to the UNKNOWN terminal, is given below.
Note
Discharge capacitors before connecting them
to the UNKNOWN terminal or a test fixture to
avoid damages to the instrument.
Table 53. Maximum discharge withstand voltage
Maximum discharge withstand voltage
Range of capacitance value C of DUT
1000 V
C < 2 µF
———
√
2 µF ≤ C
2/C V
1200
1000
800
600
400
200
0
1.E–15
1.E–13
1.E–11
1.E–09
1.E–07
1.E–05
1.E–03
Capacitance [F]
Figure 8. Maximum discharge withstand voltage
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